Smoke-consuming locomotive



Patented Deo. 25,18%

" l'LUNIPIED STTESLPATENT OFFICE rIo FRANK CHARLES MGNALLY, or KANSAS CITY, MISSOURI.

SMOKEPCONSUMING LOCOM-OTIVE.

SPECIFICATION forming part of Letters Patent No. 531,555, dated December 25, 1894.

` Appnmnnieanayv.1894. sesamo. 510.366. (Nomads.)

To all whom it may-concern.'

Be it known that I, FRANK CHARLES Mci NALLY, a citizen 'of the United States, resid-v ing in Kansas City, in thecounty of Jackson and State of Missouri, haveinvented certain Anew and useful Improvements in Smoke-Consuming Locomotives; and I do hereby/declare that the following is a full, clear, and exact description of the` invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this'specitication, in which- Figure l represents a longitudinal sectional view on a vertical plane through the middle of a locomotive of my improved construction. Fig.'2 is a detail view, in perspective, of the smoke-stackand its cover, with the mechanism for operating the same; Vand Fig. 3 is a plan view of the smoke-stack cover.

Like letters of reference designateV corresponding parts in all the gures.

This invention relates to locomotives which l consume their own products of combustion, (called sometimes smokeless locomotives,) of that type which are provided with a revolving fan-blower for creating a forced draft and returning the smoke and cinders from the smoke-box to the lire-box, instead of per'- mitting them to escape into the open air; and my improvement consists in the novel construction and combination of the fire-box, the

' smoke or-cinderbox, the revolving fan, the

engine exhaust, the smoke-stack, and a valve for regulating the draft through the same;

substantially as will be hereinafter more fully described and claimed.

Onpthe accompanying `drawings,'the reference-letterV A denotes the boiler and B the Iiues of a locomotive of any approved construction.

I connects the fan-chamber G with the top of Y wh eels.

' the smoke-box uponwhich said chamber is connected to another vertical pipe M, which passes up through the middle of the smokestack to the open top of the same, which is provided with a hinged valve or damper O having a bent arm P, P', on one side, connected to a horizontal rod R by means of an intervening bell-crank Q. vRod R extends back into the cab of the locomotive, so as to be within easy reach of the engineer, and by pushing this rod, the damper may be opened, as indicated in dotted lines, while the damper is lowered and .closed by pulling on rod R. The damper O, which is of such size and shape that`it will tit closely over the open top of the smoke-stack, has a central circular aperture o, corresponding in diameter to the size of the vertical exhaust-pipe M, so that when the damper is in its down position or closed, the exhaust from the engine-cylinders will always remain open.

Fromvthe foregoing description, taken in connection with the drawings, the operation of my vcombined forced-draft and smoke-consuming device will readily be understood.

The fan H may be revolved either by a `small separate engine, taking steam from the locomotive boiler, o'r by means of a belt-pulley on its axle connected to a pulley on the axle of one of the, truck-wheels or drive- In first starting a fire to get up steam, damper O is left open to produce a natural draft, but when the locomotive is running, the damper is closed and the fan-blower H is started revolving in the direction indicated by the arrow. The current of air thus produced draws the cinders and gaseous products of combustion from the smoke box F np through pipe I intoI the fan-chamber G,

from which they are expelled through pipe J and carried back into the closed ash-pan E, and then up through the grate D into the mass of burning fuel in the fire-box O, where the inflammable gases and solid products of combustion are consumed; thereby not only doing away with all visible smoke and the escape of cnders through the smoke-stack, but ecouomizing fuel by utilizing the gases and solid uely-diminuted products of combustion, which usually are permitted to escape into the open air.

If the fan-blower should accidentally break or get outof order, Valve O is opened and the vertical exhaust-pipe M, within the smokestack, is removed by uncoupling and disconnecting the detachable connecting-sleeve L from the top of the bifurcated exhaust-pipe K; the door to the ash-pan E being opened at the same time. This permits of the locomotive being run in the usual manner, exhausting the products of combustion through the smoke-stack until the necessary repairs can be made, so that alocomotive of my improved construction cannot be disabled by accidents happening to the forced-draft fan or the mechanism for operating it.

Having thus described my invention, I

claim and desire to secure by Letters Patent of the United States- In a smoke consuming locomotive, the combinatiou with the fire-box, the closed ash pan, the smoke or cinder hox,the fan chamber G, having an inlet I from the smoke box, and outlet j, the rotary fan blower H, the pipe J leading from the fan chamber to the ash pau, and the smoke stack, of the bifurcated steam exhaust pipe K provided with the detachable coupling sleeve L, the exhaust pipe M, connected with said coupling located in and concentric with the smoke stack, with its upper end Hush with the upper end of said stack, the damper hinged to said stack and having a central aperture and the flexible connection leading therefrom to the cab, the coustructiou being such that when said damper is closed it will close the top of the smoke stack, butleave the exhaust pipe M open, substantially as specified.

In testimony that I claim the foregoing as 5ol my own I have hereunto affixed my signature in presence of two Witnesses.

FRANK CHARLES MCNALLY. Witnesses:

ISAAC B. MARLATT, JOHN H. YOUNG. 

